Big protests in Egypt - level 3

This footage taken from an Egyptian internet-based news outlet shows what it claims is police firing live rounds on protesters on Wednesday in Cairo.

It's believed hundreds have been killed and more than a thousand injured after a raid on supporters of Egypt's deposed Islamist president Mohamed Morsi in Cairo and in other violent clashes in the country.

In the streets of north-east Cairo, where thousands of Morsi's supporters have staged a sit-in for the last six weeks, riot police took cover behind armed vehicles and fired reportedly live rounds and tear gas at protesters.

The presidency's announced a month-long state of emergency across Egypt and ordered the armed forces to help police in full security. A curfew has also been introduced.

Wednesday's assault prompted wide-spread condemnation. Turkey urged the UN Security Council and the Arab League to act quickly to stop a massacre in Egypt and Iran warned of the risk of civil war.